EP 1229393 B1 20081022 - Electrophotographic apparatus and process-cartridge
Title (en)
Electrophotographic apparatus and process-cartridge
Title (de)
Elektrophotographischer Apparat und Prozesskartusche
Title (fr)
Appareil électrophotographique et cartouche de traitement
Publication
Application
Priority
JP 2001023869 A 20010131
Abstract (en)
[origin: EP1229393A1] An electrophotographic apparatus includes an electrophotographic photosensitive member comprising a support and a photosensitive layer thereon, a charging means for charging the photosensitive member, a multi-beam exposure means for illuminating the photosensitive member with a plurality of laser beams to form an electrostatic latent image on the photosensitive member, a developing means for developing the electrostatic latent image to form a toner image on the photosensitive member, and a transfer means for transferring the toner image from the photosensitive member to a transfer-receiving material. The electrophotographic apparatus is not equipped with a charge-removal means for uniformly charge-removing the photosensitive member in advance of operation of the charging means. Further, the photosensitive member has a photosensitive layer containing oxytitanium phthalocyanine and exhibits a charge mobility of 7.0x10<-5> to 2.0x10<-5> cm<2>/volt.sec. As a result, the electrophotographic apparatus can provide a higher process speed and/or a higher resolution because of the multi-beam exposure means without causing a density difference regardless of laser beam emission state. <IMAGE>
IPC 8 full level
G03G 5/06 (2006.01)
CPC (source: EP US)
G03G 5/0696 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1229393 A1 20020807; EP 1229393 B1 20081022; DE 60229457 D1 20081204; US 2003043253 A1 20030306; US 6703174 B2 20040309
DOCDB simple family (application)
EP 02002252 A 20020130; DE 60229457 T 20020130; US 5842502 A 20020130